Wrench.



P. IVERSON.

WRENCH.

APPLICATION- FILED OCT- 5. 1916.

1,234,765, Patented July 31, 1917.

2 SHEETS-SHEET 1.

P.1VERSON. WRENCH.

APPLICATION HLED OCT. 5. I916.

1,234,765.- v Patentedlul 1,1917.

2 SHEET ET 2.

F8 50 i 5x WW M:

PATER IVERSGN; or KINDRED, NORTH DAKOTA.

WRENCH.

Specification of Letters Patent.

Patented July 31, 191 *7.

Appiiea'tien filed camber 5, 1916. seen its. leases.

To all whom it ma concern:

Be it known that I, PA't'rnn Ivn asoN, a citizen of the United States, residing at Kindred, in the county of Cass and State of North Dakota, have invented certain useful Improvements in renches, of which the following is a specification, reference being had therein to the accompanying drawing.

The invention relates to a wrench and more particularlyv to the class of ratchet wrenches.

The primary object of the invention is the provision of a. wrench. of this character wherein the construction thereof permits the convenient loosening 'o'r tightening of burs, teeth, tines or nuts within the cylinder of a threshing machine which are inaccessible for the use of an ordinary wrench and the proper leverage can be had for operation.

Another objectof the invention is the provision of a wrench of this character wherein the construction thereof is novel in form and the ratchet mechanism therein can be readily adjusted for permitting reverse ac tion of the wrench either in loosening or tightening parts.

A further object of the invention is the provision of a wrench of this character wherein the handle stem carries a crank which is swiveled in the head of the wrench so that the same can be properly manipulated when the wrench is in use for the tightening or loosening of parts, the said wrench being designed particularly for use in tightening and looseningv burs or spikes in a cylinder in a threshing machine.

A still further object of the invention is the provision of a wrench of this character which is simple in construction, thoroughly reliable and'eihcient in its operation, strong, durable, readily and easily adjusted and inexpensive in manufacture.

With these and other objects in view the invention consists in the features of construction, combination of elements, and arrangement of parts as will be hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereunto appended.

In the accompanying drawings:

Figure 1 is a fragmentary perspective View of a portion of the cylinder in the threshing machine showing the wrench constructed in accordance with the invention applied.

Fig. 2 is a top plan view of the wrench.

Fig. 3 is a vertical longitudinal sectional view through the head of the wrench;

Fig. 4 is a sectional view on the line of Fig. 3.

Fig. 5 is a perspective member of the wrench.

Fig. 6 is a perspective view stem;

similarreference characters indicate corresponding parts throughout the several views in the drawings. 7

Referring to the drawings in. detail, A designates a portion of a bar or slat and B the bur, tooth or tine mounted therein of the cylinder of a threshing machine which is of the usual well-known construction and these parts being inerely shown to illustrate the application and manner of iise of the wrench hereinafter fully described.

The wrench comprises a head 10 in one end of which is rotatably mounted a ratchet hub 11 formed with a chuck 12 at one end whilethe epposite end is reduced to provide a central boss 13 for receiving capdike collar 14: which is held on the boss by means of a retaining pin 15 which is passed transversely through the boss 18. In this inann erth e' hiib rotatably held within the head 10 while rotatably supported in the other end of said head is a stud 16 of a crank 17 formed at the end of a handle stem 18 to which is detachably connected a handle hereinafter described. v

The head l0 is formed with a bifurcation 19 opening through one end thereof in which is received the block end 20 of a guide pin 21 the latter being passed through a transversely disposed web 22 formed in the head 10. Telescoped upon this pin 21 is a slida view of the. chuck of the handle able and rotatable locking bolt 23 which is formed at one end With a bevel latch tooth 24 to engage in any one of the series of grooves 25 forming the ratchet surface of the ratchet hub 11 so that the latter will be locked against rotation in one direction in the head 10. By reason of the formation of the tooth 24 on the bolt 23 the hub 11 will be freed for rotation in the reversed direction or the head 10 can revolve on the hub 11 in one direction yet will be locked against reverse movement until the bolt 23 is adjusted to permit the reverse revolving of the head or the reverse rotation of the hub 11 therein.

The guide pin 21 is formed With a transverse slot 26 in which engages a cross pin 27 formed in a follower ring 28 slidably fitted upon said guide pin 21. To this cross pin 27 is connected one end of a coil retractile spring 29 which has its opposite end fixed in the guide pin 21 so as to exert a pull upon the ring 28 which acts upon the bolt 23 to positively move the same into locking engagement with the hub 11 in the head 10. he bolt 23 at the end next to the ring 28 is exteriorly knurled as at 30 to afford a hand grip so that on slightly retracting .the bolt upon the guide pin 21 it can be rotated thereon for changing the position of the bolt to reverse the feed of the ratchet hub 11 and the head 10 as will be clearly ap parent.

The web 22 is provided with an opening 22 to accommodate the reduced portion 31 formed on the block end 20 of the guide pin 21 for the proper assembling of the block end 20 within the head 10. This block end 20 is also formed with an opening 23 to re ceive the stud 16 of the crank 17 formed with the stem 18 for the handle.

The handle comprises a bar 33 which is formed with squared openings 34: and 35 centrally thereof and at one end respectively of the same. Either of these openings 34: or 35 is adapted to receive the squared end 36 of the stem 18 and in this manner the handle bar is fastened thereon. The handle bar by reason of the adjustability thereof upon the stem permits the proper leverage to be had in manipulating the wrench for the tightening or loosening of the bur B in the bar A, the chuck being adapted for adjustable engagement with the headed end of the bur B as is clearly shown in Fig. 1 of the drawings.

Loose upon the stem 18 next to the crank 17 is a sleeve 37 which is held against displacement longitudinally upon the stem by means of the collar 38 thereon and this sleeve 37 is formed with a stop wing or extension 39 which is engageable with the head 10 so that on manipulating the handle bar the crank can be properly turned for Copies the swinging of the head 10 which acts upon the chuck 12 for the turning thereof when engaged with the bur B in the bar A, it being understood of course that the bar carries a number of burs or spikes B and is only a portion of one of a series of bars of the cylinder employed in a threshing machine. The make-up of the cylinder prevents the use of an ordinary wrench but by the employment of the wrench hereinbefore described the burs or spikes in the bars of the cylinder can be readily loosened or tightened as will be obvious.

On changing the bolt 23 for rotating the same upon the guide pin 21 the ratchet mechanism of the wrench is reversed for the proper manipulation of the wrench.

From the foregoing it is thought that the construction and manner of use of the wrench will be clearly understood and therefore a more extended explantion has been omitted.

What is claimed is:

1. A wrench of the character described comprising a head, a chuck rotatably mounted in the head, reversible ratchet lock mechanism within the head and cooperative with the chuck, a crank stem having its crank rotatably connected with the head, said stem 7 forming a means for operating the wrench, and a sleeve rotatably mounted on the stem and having an extension engageable with the head.

2. A wrench of the character described comprising a head, a chuck rotatably mounted in the head, reversible ratchet lock mechanism within the head and cooperative with the chuck, a crank stem having its crank rotatably connected with the head, said stem forming a means a sleeve rotatably mounted on the stem and havin an extension engageable with the headfand a ratchet hub formed on the chuck and iournaled in the head for co-- operation with the ratchet mechanism.

In testimony whereof I affix my signature.

PATER IVERSON.

of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

for operating the wrench, 

